YMCA Check In

YMCA Check In

This will allow you to have many barcodes displayed at once in a vertical orientation. The reason this app is called 'YMCA Check In' is because when you first arrive, they have you scan in the barcode of each member in your family. This can involve flipping through several tags on a keyring, or having them lookup multiple people.
With this, the attendant can quicky work their way down the screen, getting everyone scanned in much faster.